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JP6964503B2 - Connection form determination support device in multi-type air conditioning system - Google Patents
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JP6964503B2 - Connection form determination support device in multi-type air conditioning system - Google Patents

Connection form determination support device in multi-type air conditioning system Download PDF

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JP6964503B2
JP6964503B2 JP2017235703A JP2017235703A JP6964503B2 JP 6964503 B2 JP6964503 B2 JP 6964503B2 JP 2017235703 A JP2017235703 A JP 2017235703A JP 2017235703 A JP2017235703 A JP 2017235703A JP 6964503 B2 JP6964503 B2 JP 6964503B2
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connection form
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JP2019100680A (en
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正樹 小松
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Mitsubishi Electric Building Solutions Corp
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Description

本発明は、マルチ式空気調和システムにおける接続形態決定支援装置、特に室外機と、ペリメータゾーンに設置されている室内機との接続の組合せに関する。 The present invention relates to a connection form determination support device in a multi-type air conditioning system, particularly an outdoor unit and a combination of connections between an indoor unit installed in a perimeter zone.

マルチ式の空気調和システムにおいては、1台の室外機に対して複数の室内機を接続する。比較的に大きい居室には、多数の室内機が設置されることになるが、全ての室内機を1台の室外機で対応するには性能上負荷がかかり過ぎてしまう場合がある。このような場合、複数の室外機を用意して、室内機をそれぞれに振り分けることになる。例えば、居室を大きく東西南北に分け、方角毎に室内機をまとめて1台の室外機に接続する。更に、あるいは、外周の影響を受けやすいペリメータゾーンと影響を受けにくいインテリアゾーンに分け、ゾーン毎方角毎に室内機をまとめて室外機に振り分ける。 In a multi-type air conditioning system, a plurality of indoor units are connected to one outdoor unit. A large number of indoor units will be installed in a relatively large living room, but there are cases where the performance load is too high for all indoor units to be handled by one outdoor unit. In such a case, a plurality of outdoor units are prepared and the indoor units are assigned to each. For example, the living room is roughly divided into north, south, east, and west, and the indoor units are grouped together for each direction and connected to one outdoor unit. Further, or, it is divided into a perimeter zone that is easily affected by the outer circumference and an interior zone that is not easily affected, and the indoor units are collectively divided into outdoor units for each direction of each zone.

ところで、マルチ式の空気調和システムにおいては、1台の室外機で複数の室内機を同時に空調運転することになるので、接続されている室内機の合計能力を考慮して、室外機の能力を決める必要がある。ただ、室外機の能力を室内機の合計能力とほぼ同等に設定すると、室外機にかかる費用が膨らんでしまう。 By the way, in a multi-type air conditioning system, one outdoor unit operates a plurality of indoor units at the same time for air conditioning, so the capacity of the outdoor unit should be adjusted in consideration of the total capacity of the connected indoor units. You need to decide. However, if the capacity of the outdoor unit is set to be almost equal to the total capacity of the indoor unit, the cost of the outdoor unit will increase.

そこで、従来においては、室外機の能力をあげる代わりに、1台の室外機に接続されている室内機をローテーションさせて運転させるなどの空調制御が提案されている(例えば、特許文献1)。 Therefore, conventionally, instead of increasing the capacity of the outdoor unit, air conditioning control such as rotating an indoor unit connected to one outdoor unit to operate it has been proposed (for example, Patent Document 1).

特開2002−13784号公報Japanese Unexamined Patent Publication No. 2002-13784 特開平08−61751号公報Japanese Unexamined Patent Publication No. 08-61751 特開平07−35390号公報Japanese Unexamined Patent Publication No. 07-35390 特開平02−126053号公報Japanese Unexamined Patent Publication No. 02-126053

従来においては、室外機の能力を超えないようにするために、1台の室外機に接続されている複数の室内機をどのように運転させるかなどの空調制御に着目しており、1台の室外機と複数の室内機との接続形態に着目していない。 Conventionally, in order not to exceed the capacity of the outdoor unit, we have focused on air conditioning control such as how to operate multiple indoor units connected to one outdoor unit, and one unit. We are not paying attention to the connection form between the outdoor unit and multiple indoor units.

本発明は、マルチ式の空気調和システムにおいて、1台の室外機に接続する室内機を日射による負荷に基づき決定することで、室外機にかかる設備費用の削減を図ることを目的とする。 An object of the present invention is to reduce the equipment cost for an outdoor unit by determining an indoor unit to be connected to one outdoor unit based on the load of solar radiation in a multi-type air conditioning system.

本発明に係るマルチ式空気調和システムにおける接続形態決定支援装置は、空間内において同じ方角のペリメータゾーンに設置されている室内機をまとめて同じ室外機に接続する際に、前記空間の各方角からかかる日射による負荷に基づいて、1台の室外機に接続する方角の組を決定する決定手段を有することを特徴とする。 In the connection form determination support device in the multi-type air conditioning system according to the present invention, when indoor units installed in the perimeter zone in the same direction in the space are collectively connected to the same outdoor unit, the connection form determination support device is connected from each direction of the space. It is characterized by having a determining means for determining a set of directions to be connected to one outdoor unit based on the load due to such solar radiation.

また、前記決定手段は、前記空間と前記空間の周囲にある建物との位置関係を参照して1台の室外機に接続する方角の組を決定することを特徴とする。 Further, the determination means is characterized in that it determines a set of directions to be connected to one outdoor unit by referring to the positional relationship between the space and the buildings around the space.

また、前記決定手段は、前記空間に対して各方角からの直達日射の当たる程度を参照して、1台の室外機に接続する方角の組を決定することを特徴とする。 Further, the determination means is characterized in that a set of directions to be connected to one outdoor unit is determined by referring to the degree of direct solar radiation from each direction to the space.

また、ペリメータゾーンに設置されている室内機を、方角毎に異なる室外機に接続した場合に対する前記決定手段により決定された組で室外機に接続した場合における室外機の能力削減効果指標を算出する算出手段を有することを特徴とする。 In addition, the capacity reduction effect index of the outdoor unit is calculated when the indoor unit installed in the perimeter zone is connected to the outdoor unit in the set determined by the determination means for the case where the indoor unit is connected to a different outdoor unit for each direction. It is characterized by having a calculation means.

本発明によれば、1台の室外機に接続する室内機を日射による負荷に基づき決定することで、室外機にかかる設備費用の削減を図ることができる。 According to the present invention, by determining the indoor unit to be connected to one outdoor unit based on the load due to solar radiation, it is possible to reduce the equipment cost for the outdoor unit.

また、室外機に接続する室内機を決定する際に、室内機が設置されている空間と、その空間の周囲の建物との位置関係を考慮することができる。 Further, when determining the indoor unit to be connected to the outdoor unit, the positional relationship between the space in which the indoor unit is installed and the buildings surrounding the space can be considered.

本実施の形態におけるマルチ式空気調和システムの室内機が設置されている空間を示す概略平面図である。It is a schematic plan view which shows the space where the indoor unit of the multi-type air conditioning system in this embodiment is installed. マルチ式空気調和システムにおける室外機と室内機の典型的な接続形態の一例を示す図である。It is a figure which shows an example of the typical connection form of an outdoor unit and an indoor unit in a multi-type air conditioning system. 本実施の形態における接続形態決定支援装置を形成するコンピュータのハードウェア構成図である。It is a hardware block diagram of the computer which forms the connection form determination support device in this embodiment. 本実施の形態における接続形態決定支援装置を示すブロック構成図である。It is a block block diagram which shows the connection form determination support device in this embodiment. 時刻と日射量との関係を示す図である。It is a figure which shows the relationship between time and the amount of solar radiation. 本実施の形態において、複数の方角に設置されている室内機に対して室外機を統合した接続形態の例を示す図である。In this embodiment, it is a figure which shows the example of the connection form which integrated the outdoor unit with the indoor unit installed in a plurality of directions. 本実施の形態における負荷状況情報記憶部に記憶される負荷状況情報のデータ構成の一例を示す図である。It is a figure which shows an example of the data structure of the load situation information stored in the load situation information storage part in this embodiment. 室外機の負荷率と効率との関係を示す図である。It is a figure which shows the relationship between the load factor and efficiency of an outdoor unit.

以下、図面に基づいて、本発明の好適な実施の形態について説明する。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

図1は、本実施の形態におけるマルチ式空気調和システムの室内機が設置されている空間を示す概略平面図である。空間は、ビルのある階にある居室を想定している。図示していないが、居室は、1つの階全体を占有しており、図示していないが、東西南北の各方角共に窓が設けられている。 FIG. 1 is a schematic plan view showing a space in which an indoor unit of the multi-type air conditioning system according to the present embodiment is installed. The space is assumed to be a living room on the floor where the building is located. Although not shown, the living room occupies the entire floor, and although not shown, windows are provided in each of the north, south, east, and west directions.

図1に示すように、居室内は、コアを中心としたインテリアゾーンと、インテリアゾーンを四方から取り囲むペリメータゾーンに区域分けされる。インテリアゾーンは、日差しや外気により温度が影響されにくいエリアである。一方、ペリメータゾーンは、外壁からの熱的影響を受けやすいエリアである。比較的広い空間の居室には、図1に示すように、インテリアゾーン及びペリメータゾーンそれぞれに室内機2が設置される。なお、図1に示す各ゾーンにおける室内機の配置及び数は、一例であってこれに限定されるものではない。 As shown in FIG. 1, the living room is divided into an interior zone centered on the core and a perimeter zone surrounding the interior zone from all sides. The interior zone is an area that is not easily affected by temperature due to sunlight or outside air. On the other hand, the perimeter zone is an area that is easily affected by heat from the outer wall. As shown in FIG. 1, indoor units 2 are installed in each of the interior zone and the perimeter zone in a living room having a relatively large space. The arrangement and number of indoor units in each zone shown in FIG. 1 is an example and is not limited thereto.

図1に例示したように、比較的広い空間の居室には、数多くの室内機が散在設置される。マルチ式空気調和システムにおいては、1台の室外機に対して複数台の室内機2が接続されるが、室外機と室内機の典型的な接続形態の一例を図2に示す。図2に示すように、各室内機を、設置されている方角及びゾーンによって分類して室内機2の組2E,2W,2S,2N、2IS,2INを形成する。そして、1台の室外機3E,3W,3S,3N,3IS,3INに対してゾーン毎方角毎にグループ分けされた室内機2の組2E,2W,2S,2N、2IS,2INが接続される。なお、本実施の形態では、室内機2を単独で取り扱うことはないので、以降の説明では、「室内機の組」を単に「室内機」とも称することにする。また、室外機3E,3W,3S,3N,3IS,3INを区別して説明しない場合、また、図2及び図6のように図示していない接続形態での室外機に対しては、単に「室外機3」と総称する。 As illustrated in FIG. 1, a large number of indoor units are scatteredly installed in a living room in a relatively large space. In the multi-type air conditioning system, a plurality of indoor units 2 are connected to one outdoor unit, and FIG. 2 shows an example of a typical connection form between the outdoor unit and the indoor unit. As shown in FIG. 2, each indoor unit is classified according to the direction and zone in which it is installed to form a set 2E, 2W, 2S, 2N, 2IS, 2IN of the indoor unit 2. Then, a set of indoor units 2 2E, 2W, 2S, 2N, 2IS, 2IN grouped for each zone and direction is connected to one outdoor unit 3E, 3W, 3S, 3N, 3IS, 3IN. .. In the present embodiment, the indoor unit 2 is not handled independently. Therefore, in the following description, the "indoor unit set" will be simply referred to as the "indoor unit". Further, when the outdoor units 3E, 3W, 3S, 3N, 3IS, and 3IN are not described separately, and when the outdoor unit has a connection form (not shown) as shown in FIGS. 2 and 6, simply "outdoor" is used. Collectively referred to as "machine 3".

図3は、本実施の形態における接続形態決定支援装置10を形成するコンピュータのハードウェア構成図である。本実施の形態において接続形態決定支援装置10を形成するコンピュータは、パーソナルコンピュータ(PC)等の従前から存在する汎用的なハードウェア構成で実現できる。すなわち、接続形態決定支援装置10は、図3に示したようにCPU21、ROM22、RAM23、ハードディスクドライブ(HDD)24、入力手段として設けられたマウス25とキーボード26、及び表示手段として設けられたディスプレイ27をそれぞれ接続する入出力コントローラ28、通信手段として設けられたネットワークインタフェース(IF)29を内部バス30に接続して構成される。 FIG. 3 is a hardware configuration diagram of a computer forming the connection form determination support device 10 according to the present embodiment. The computer forming the connection form determination support device 10 in the present embodiment can be realized by a conventional general-purpose hardware configuration such as a personal computer (PC). That is, as shown in FIG. 3, the connection form determination support device 10 includes a CPU 21, a ROM 22, a RAM 23, a hard disk drive (HDD) 24, a mouse 25 and a keyboard 26 provided as input means, and a display provided as a display means. An input / output controller 28 for connecting the 27s and a network interface (IF) 29 provided as a communication means are connected to the internal bus 30.

図4は、本実施の形態における接続形態決定支援装置10を示すブロック構成図である。本実施の形態における接続形態決定支援装置10は、接続形態決定部11、効果算出部12、表示制御部13及び負荷状況情報記憶部14を有している。なお、本実施の形態の説明に用いない構成要素については図から省略している。本実施の形態では、図2に例示したように同じ方角のペリメータゾーンに設置されている室内機2を組にして同じ室外機3に接続することになるが、接続形態決定部11は、居室に対して各方角からかかる日射による負荷に基づいて、1台の室外機3に接続する方角の組を決定する。効果算出部12は、東西南北の各ペリメータゾーンに設置されている室内機2E,2W,2S,2Nを、方角毎に異なる室外機3に接続した場合に対する接続形態決定部11により決定された組で室外機3に接続した場合における室外機3の能力削減効果指標を算出する。表示制御部13は、接続形態決定部11及び効果算出部12の処理結果の表示を制御する。 FIG. 4 is a block configuration diagram showing the connection form determination support device 10 according to the present embodiment. The connection form determination support device 10 in the present embodiment includes a connection form determination unit 11, an effect calculation unit 12, a display control unit 13, and a load status information storage unit 14. The components not used in the description of the present embodiment are omitted from the drawings. In the present embodiment, as illustrated in FIG. 2, the indoor units 2 installed in the perimeter zone in the same direction are assembled and connected to the same outdoor unit 3, but the connection form determining unit 11 is in the living room. On the other hand, a set of directions to be connected to one outdoor unit 3 is determined based on the load of sunlight applied from each direction. The effect calculation unit 12 is a set determined by the connection form determination unit 11 for connecting the indoor units 2E, 2W, 2S, and 2N installed in each of the north, south, east, and west perimeter zones to the outdoor units 3 that are different for each direction. The capacity reduction effect index of the outdoor unit 3 when connected to the outdoor unit 3 is calculated. The display control unit 13 controls the display of the processing results of the connection form determination unit 11 and the effect calculation unit 12.

負荷状況情報記憶部14には、居室における冷房熱負荷の状況を示す情報が記憶されるが、この情報の詳細については、動作の説明と合わせて説明する。 The load status information storage unit 14 stores information indicating the status of the cooling heat load in the living room, and details of this information will be described together with the description of the operation.

接続形態決定支援装置10における各構成要素11〜13は、接続形態決定支援装置10を形成するコンピュータと、コンピュータに搭載されたCPU21で動作するプログラムとの協調動作により実現される。また、負荷状況情報記憶部14は、接続形態決定支援装置10に搭載されたHDD34にて実現される。あるいは、RAM23又は外部にある記憶手段をネットワーク経由で利用してもよい。 Each of the components 11 to 13 in the connection form determination support device 10 is realized by a cooperative operation between the computer forming the connection form determination support device 10 and the program operated by the CPU 21 mounted on the computer. Further, the load status information storage unit 14 is realized by the HDD 34 mounted on the connection form determination support device 10. Alternatively, the RAM 23 or an external storage means may be used via the network.

また、本実施の形態で用いるプログラムは、通信手段により提供することはもちろん、CD−ROMやUSBメモリ等のコンピュータ読み取り可能な記録媒体に格納して提供することも可能である。通信手段や記録媒体から提供されたプログラムはコンピュータにインストールされ、コンピュータのCPUがプログラムを順次実行することで各種処理が実現される。 Further, the program used in the present embodiment can be provided not only by communication means but also by storing it in a computer-readable recording medium such as a CD-ROM or a USB memory. Programs provided from communication means and recording media are installed in a computer, and various processes are realized by sequentially executing the programs by the CPU of the computer.

図5は、時刻と日射量との関係を示す図である。この図は、空気調和ハンドブック 改訂5版(丸善)から引用している。「天空(散乱)日射」とは、全天からの散乱光のことをいう。また、直射光を「直達日射」というが、図5の「全天日射」とは、外壁面が受ける直達日射と天空散乱日射を合わせたものをいう。 FIG. 5 is a diagram showing the relationship between the time and the amount of solar radiation. This figure is taken from the 5th revised edition of the Air Harmony Handbook (Maruzen). "Sky (scattered) solar radiation" refers to scattered light from all over the sky. Further, the direct solar radiation is referred to as "direct solar radiation", and the "all-sky solar radiation" in FIG. 5 refers to a combination of the direct solar radiation received by the outer wall surface and the scattered solar radiation in the sky.

全天日射に着目すると、図5から明らかなように、窓面や外壁からの日射熱による最大冷房負荷の影響は、東側と西側の日射量が大半を占めている。そして、東側は午前中であり、西側は午後であり、時間的に重なっていない。また、南側は正午前後であり、北側は朝と夕方であり、時間的に重なっていない。 Focusing on the total solar radiation, as is clear from FIG. 5, the influence of the maximum cooling load due to the solar heat from the window surface and the outer wall is dominated by the amount of solar radiation on the east side and the west side. And the east side is in the morning and the west side is in the afternoon, and they do not overlap in time. In addition, the south side is after noon and the north side is morning and evening, and they do not overlap in time.

図2に例示したように、ペリメータゾーンに設置されている室内機2を方角毎に分けて室外機3に接続する接続形態の場合、各室外機3の能力を、接続されている室内機2の合計能力とほぼ同等に設定すれば、室内機2が最大能力で運転されようとも正常に運転制御できるので好ましいと考えられる。図5によると、東西の日射量の最大値はほぼ同等なので、例えば、東西の室内機2E,2Wに対する室外機3E,3Wの処理能力も同等でよい。従って、ここでは、室外機3E,3Wの処理能力を割合で示してそれぞれ100とする。室外機3Eは、午前中では100の能力が要求される可能性があるが、午後にはないと考えられる。一方、室外機3Wは、午後では100の能力が要求される可能性があるが、午前中にはないと考えられる。つまり、室外機3Eにおける午後及び室外機3Wに午前中において、各室外機3E,3Wの処理能力には余裕があり非効率である。 As illustrated in FIG. 2, in the case of a connection form in which the indoor unit 2 installed in the perimeter zone is divided for each direction and connected to the outdoor unit 3, the capacity of each outdoor unit 3 is combined with the connected indoor unit 2. If it is set to be substantially equal to the total capacity of the above, it is considered preferable because the operation can be normally controlled even if the indoor unit 2 is operated at the maximum capacity. According to FIG. 5, since the maximum values of the amount of solar radiation in the east and west are almost the same, for example, the processing capacities of the outdoor units 3E and 3W may be the same as those of the indoor units 2E and 2W in the east and west. Therefore, here, the processing capacities of the outdoor units 3E and 3W are shown in proportion and set to 100, respectively. The outdoor unit 3E may be required to have a capacity of 100 in the morning, but it is considered that it will not be in the afternoon. On the other hand, the outdoor unit 3W may be required to have a capacity of 100 in the afternoon, but it is considered that it is not in the morning. That is, in the afternoon of the outdoor unit 3E and in the morning of the outdoor unit 3W, there is a margin in the processing capacity of each outdoor unit 3E and 3W, which is inefficient.

そこで、本実施の形態においては、図5に示された、居室の各方角からかかる日射による負荷を参照することによって1台の室外機3に接続する方角の組を決定するようにした。本実施の形態において、複数の方角に設置されている室内機2に対して室外機3を統合した接続形態の例を図6に示す。 Therefore, in the present embodiment, the set of directions to be connected to one outdoor unit 3 is determined by referring to the load due to the solar radiation applied from each direction of the living room shown in FIG. FIG. 6 shows an example of a connection mode in which the outdoor unit 3 is integrated with the indoor unit 2 installed in a plurality of directions in the present embodiment.

図6には、1台の室外機3EWには、東側の室内機2Eと西側の室内機2Wが接続されている例が示されている。すなわち、接続形態決定部11が、図5に例示した情報をもとに1台の室外機3EWに接続する方角の組、この例では東と西の組と決定した場合に例が示されている。また、1台の室外機3SNに接続する方角の組、この例では南と北の組と決定した場合に例が示されている。 FIG. 6 shows an example in which the indoor unit 2E on the east side and the indoor unit 2W on the west side are connected to one outdoor unit 3EW. That is, an example is shown when the connection form determination unit 11 determines a set of directions to be connected to one outdoor unit 3EW based on the information illustrated in FIG. 5, in this example, a set of east and west. There is. Further, an example is shown when it is determined that a group of directions connected to one outdoor unit 3SN, in this example, a group of south and north.

図6に示すように、東西の室内機2E,2Wを1台の室外機3EWに接続する場合、室外機3EWに要求される能力を、図5に示す日射量に基づくと200(=100+100)とする必要はないと考えられ、100から200の範囲でよいと考えられる。なお、居室の広さ、窓の大きさや数、室外機3の能力等によって、室外機3EWに100から200の間のどの程度の能力が必要になるかは決定される。いずれにしても、各方角からかかる日射による負荷を参照し、組み合わせる方角を決定して1台の室外機3に当該方角の室内機2を接続することによって、室外機3には、統合前に要求される能力は必要がなくなる。上記例に従うと、図5に示す各方角からかかる日射による負荷(日射量)を参照することによって、東と西を組み合わせる、具体的には東側のペリメータゾーンに設置されている室内機2Eと、西側のペリメータゾーンに設置されている室内機2Wと、を統合して、1台の室外機3EWに接続することによって、室外機3EWには、200の処理能力が必要なくなる。このように、図2に例示した2台の室外機3E,3Wを設置する場合に比して、1台の室外機3EWを設置する場合の設備費用を削減することができる。1台に統合することによって1台の室外機3に要求される能力が向上し、1台分の費用は増えることがあるかもしれないが、それでも2台より1台の室外機3に統合した方が設備費用を削減することになる。 As shown in FIG. 6, when the east and west indoor units 2E and 2W are connected to one outdoor unit 3EW, the capacity required for the outdoor unit 3EW is 200 (= 100 + 100) based on the amount of solar radiation shown in FIG. It is considered that it is not necessary, and it is considered that the range of 100 to 200 is sufficient. The size and number of windows, the capacity of the outdoor unit 3, and the like determine how much capacity the outdoor unit 3EW needs between 100 and 200. In any case, by referring to the load due to the solar radiation applied from each direction, determining the direction to be combined, and connecting the indoor unit 2 in the direction to one outdoor unit 3, the outdoor unit 3 is connected to the outdoor unit 3 before integration. The required ability is no longer needed. According to the above example, by referring to the load (solation amount) due to solar radiation applied from each direction shown in FIG. 5, the east and west are combined, specifically, the indoor unit 2E installed in the perimeter zone on the east side, and the indoor unit 2E. By integrating the indoor unit 2W installed in the perimeter zone on the west side and connecting to one outdoor unit 3EW, the outdoor unit 3EW does not need a processing capacity of 200. As described above, the equipment cost when installing one outdoor unit 3EW can be reduced as compared with the case where the two outdoor units 3E and 3W illustrated in FIG. 2 are installed. By integrating into one unit, the capacity required for one outdoor unit 3 will be improved, and the cost for one unit may increase, but it is still integrated into one outdoor unit 3 rather than two units. It will reduce the equipment cost.

前述したことは、南と北の関係についても同様で、例えば、室内機2Sに対する室外機3Sの処理能力を50、室内機2Nに対する室外機3Nの処理能力を30、とすると、図6に示すように南北の室内機2S,2Nを1台の室外機3SNに接続する場合、室外機3SNに要求される能力は、80(=50+30)とする必要はないと考えられ、50から80の範囲でよいと考えられる。 The same applies to the relationship between the south and the north. For example, assuming that the processing capacity of the outdoor unit 3S with respect to the indoor unit 2S is 50 and the processing capacity of the outdoor unit 3N with respect to the indoor unit 2N is 30, FIG. When the north-south indoor units 2S and 2N are connected to one outdoor unit 3SN, the capacity required for the outdoor unit 3SN does not need to be 80 (= 50 + 30), and is in the range of 50 to 80. Is considered to be good.

以上説明したように、図5に示す日射による負荷に基づくと、東と西、南と北、というように、対向する方角を組み合わせることで室内機2の統合後の室外機3の能力を削減することができるが、以下、具体的な数値をあげてより詳細に説明する。 As explained above, based on the load of solar radiation shown in FIG. 5, the capacity of the outdoor unit 3 after the integration of the indoor unit 2 is reduced by combining opposite directions such as east and west and south and north. However, it will be explained in more detail below with specific numerical values.

図7は、本実施の形態における負荷状況情報記憶部14に記憶される負荷状況情報のデータ構成の一例を示す図である。図7において、「最大冷房負荷(W/m)」(a)は、方角毎の最大冷房負荷であり、空気調和・衛生工学会規格 冷暖房熱負荷簡易計算法(SHASE−S122)に示されている数値である。「直達日射が当たらない場合の冷房負荷(W/m)」(b)は、いずれも同値とする。また、ここでは、図1に示すように南北の辺が東西より長い横長の居室を想定し、「床面積(m)」(c)は、東と西のペリメータゾーンの床面積より南と北のペリメータゾーンの床面積の方が若干広くなっている。 FIG. 7 is a diagram showing an example of a data structure of load status information stored in the load status information storage unit 14 in the present embodiment. In FIG. 7, the “maximum cooling load (W / m 2 )” (a) is the maximum cooling load for each direction, and is shown in the air conditioning and sanitary engineering society standard cooling / heating heat load simple calculation method (SHASE-S122). It is a numerical value. “Cooling load (W / m 2 ) when direct sunlight does not hit” (b) shall be the same value. In addition, as shown in FIG. 1, assuming a horizontally long living room whose north-south side is longer than east-west, the "floor area (m 2 )" (c) is south of the floor area of the perimeter zone in the east and west. The floor area of the northern perimeter zone is slightly larger.

以上の前提条件となる数値のもと、各方角の「最大冷房負荷(kW)」(d)は、a×cと算出できる。図7では、以下の説明の便宜上、各値に「東Max」などのように文字でも表現できるようにした。また、「直達日射が当たらない場合の冷房負荷(kW)」(e)は、b×cと算出できる。図7では、以下の説明の便宜上、各値に「東0」などのように文字でも表現できるようにした。 Based on the above precondition values, the "maximum cooling load (kW)" (d) in each direction can be calculated as a × c. In FIG. 7, for convenience of the following explanation, each value can be expressed by characters such as "East Max". Further, the "cooling load (kW) when direct sunlight does not hit" (e) can be calculated as b × c. In FIG. 7, for convenience of the following explanation, each value can be expressed by characters such as "East 0".

効果算出部12は、上記負荷状況情報の数値例を参照して、室外機3を統合したときの効果を示す能力削減効果指標を次のようにして算出する。 The effect calculation unit 12 calculates the capacity reduction effect index showing the effect when the outdoor unit 3 is integrated by referring to the numerical example of the load status information as follows.

まず、図2に示すように、東側ペリメータゾーンと西側ペリメータゾーンの各室内機2E,2Wに対応する室外機3を室外機3E,3Wと別個に設けた場合、室外機3E,3Wの能力の合計は、東Max+西Max=17.3+20.1=37.4kWとなる。 First, as shown in FIG. 2, when the outdoor units 3 corresponding to the indoor units 2E and 2W in the east side perimeter zone and the west side perimeter zone are provided separately from the outdoor units 3E and 3W, the capacity of the outdoor units 3E and 3W is increased. The total is East Max + West Max = 17.3 + 20.1 = 37.4 kW.

これに対し、東側ペリメータゾーンと西側ペリメータゾーンの各室内機2E,2Wに対応する室外機3を室外機3EWに統合した場合、室外機3EWの能力の合計は、東Max+西0=17.3+10.0=27.4kWと、東0+西Max=10.0+20.1=30.1kWのうち、大きい値の30.1kWとなる。 On the other hand, when the outdoor units 3 corresponding to the indoor units 2E and 2W in the east side perimeter zone and the west side perimeter zone are integrated into the outdoor unit 3EW, the total capacity of the outdoor units 3EW is East Max + West 0 = 17.3 + 10. Of 0.0 = 27.4 kW and East 0 + West Max = 10.0 + 20.1 = 30.1 kW, the larger value is 30.1 kW.

すなわち、室内機2Eと室内機2Wの室外機3を室外機3EWに統合することによって、37.4−30.1=7.3kWの削減効果が期待でき、また、室外機3の能力を30.1/37.4≒0.81と小さくすることが可能となる。 That is, by integrating the indoor unit 2E and the outdoor unit 3 of the indoor unit 2W into the outdoor unit 3EW, a reduction effect of 37.4-30.1 = 7.3 kW can be expected, and the capacity of the outdoor unit 3 is increased to 30. It is possible to make it as small as 1 / 37.4 ≈ 0.81.

図8は、室外機3の負荷率と効率との関係を示す図である。図8から、負荷率が60%以上になると室外機3を効率的に運転させることができることが理解できる。ところで、室外機3の負荷率は、年間を通して50%以下になっていることが大半である。室外機3の能力が低下すると、相対的に室外機3にかかる負荷が増えることになる。これにより、負荷率が上昇することになるので、室外機3の効率も向上することになる。例えば、室外機の能力を0.8に低減できたらその効率は1/0.8=1.25程度に向上する。つまり、室外機3の能力を0.8に低減できたら、室外機3の消費電力をほぼ0.8に低減できる。上記数値例の場合、室内機2Eと室内機2Wの室外機3を統合することによって消費電力をほぼ0.81に低減できる。 FIG. 8 is a diagram showing the relationship between the load factor and the efficiency of the outdoor unit 3. From FIG. 8, it can be understood that the outdoor unit 3 can be operated efficiently when the load factor is 60% or more. By the way, in most cases, the load factor of the outdoor unit 3 is 50% or less throughout the year. When the capacity of the outdoor unit 3 decreases, the load applied to the outdoor unit 3 increases relatively. As a result, the load factor increases, so that the efficiency of the outdoor unit 3 also improves. For example, if the capacity of the outdoor unit can be reduced to 0.8, the efficiency will be improved to about 1 / 0.8 = 1.25. That is, if the capacity of the outdoor unit 3 can be reduced to 0.8, the power consumption of the outdoor unit 3 can be reduced to approximately 0.8. In the case of the above numerical example, the power consumption can be reduced to approximately 0.81 by integrating the indoor unit 2E and the outdoor unit 3 of the indoor unit 2W.

続いて、南側ペリメータゾーンと北側ペリメータゾーンの各室内機2S,2Nに対応する室外機3を室外機3S,3Nと別個に設けた場合、室外機3S,3Nの能力の合計は、南Max+北Max=24.5+18.7=43.2kWとなる。 Subsequently, when the outdoor units 3 corresponding to the indoor units 2S and 2N in the south side perimeter zone and the north side perimeter zone are provided separately from the outdoor units 3S and 3N, the total capacity of the outdoor units 3S and 3N is the south Max + north. Max = 24.5 + 18.7 = 43.2 kW.

これに対し、南側ペリメータゾーンと北側ペリメータゾーンの各室内機2S,2Nに対応する室外機3を室外機3SNに統合した場合、室外機3SNの能力の合計は、南Max+北0=24.5+14.0=38.5kWと、南0+北Max=14.0+18.7=32.7kWのうち、大きい値の38.5kWとなる。 On the other hand, when the outdoor units 3 corresponding to the indoor units 2S and 2N in the south side perimeter zone and the north side perimeter zone are integrated into the outdoor unit 3SN, the total capacity of the outdoor unit 3SN is South Max + North 0 = 24.5 + 14 Of 0.0 = 38.5 kW and South 0 + North Max = 14.0 + 18.7 = 32.7 kW, the larger value is 38.5 kW.

すなわち、室内機2Sと室内機2Nの室外機3を室外機3SNに統合することによって、43.2−38.5=4.7kWの削減効果が期待でき、また、室外機3の能力を38.5/43.2≒0.89と小さくすることが可能となる。 That is, by integrating the indoor unit 2S and the outdoor unit 3 of the indoor unit 2N into the outdoor unit 3SN, a reduction effect of 43.2-38.5 = 4.7 kW can be expected, and the capacity of the outdoor unit 3 is increased to 38. It is possible to reduce the size to .5 / 43.2≈0.89.

このように、2つの方角の室内機2S,2Nを接続する室外機3を統合することによって室外機3の消費電力をほぼ0.89に低減できる。 In this way, the power consumption of the outdoor unit 3 can be reduced to approximately 0.89 by integrating the outdoor unit 3 that connects the indoor units 2S and 2N in the two directions.

効果算出部12は、以上のようにして室外機3の能力削減効果指標として削減できる消費電力量等を算出するが、表示制御部13は、接続形態決定部11が決定した方角の組及び効果算出部12が算出した当該方角の組合せによる能力削減効果指標をディスプレイ27に表示する。この表示内容を参照して、各関係者は、室外機3の見積、発注、工事計画等を行うことになる。 The effect calculation unit 12 calculates the power consumption and the like that can be reduced as an index of the capacity reduction effect of the outdoor unit 3 as described above, and the display control unit 13 calculates the set and effect of the directions determined by the connection form determination unit 11. The capacity reduction effect index based on the combination of the directions calculated by the calculation unit 12 is displayed on the display 27. With reference to this display content, each related party will make an estimate, order, construction plan, etc. for the outdoor unit 3.

ところで、上記説明では、室内機2が設置されている建物の周囲に、厳密には図1に示す居室(のある建物の階)の周囲に、直達日射を遮るような建物がない場合を想定して説明した。つまり、東西南北の全方角から直達日射が当たる場合を想定していた。ただ、実際には、いずれかの方角に直達日射を遮るような建物が存在しているかもしれない。 By the way, in the above description, it is assumed that there is no building that blocks direct sunlight around the building in which the indoor unit 2 is installed, strictly speaking, around the living room (the floor of the building in which the room is located) shown in FIG. I explained. In other words, it was assumed that direct sunlight would hit from all directions of north, south, east and west. However, in reality, there may be a building that blocks direct sunlight in either direction.

そこで、本実施の形態においては、いずれかの方角に直達日射を遮るような建物が存在している場合についても言及する。いずれの方角に建物があっても考え方や計算方法は同じなので、ここでは、上記居室のある建物の東側に建物があって居室の東面に直達日射が当たらない場合、更に方角の組合せとして、対向する角度のみで組を形成しない東、南、西の3方角の室内機2E,2S,2Wを1台の室外機3に統合する場合を例にして説明する。 Therefore, in the present embodiment, the case where a building that blocks direct solar radiation exists in either direction is also referred to. The idea and calculation method are the same regardless of the direction of the building, so here, if there is a building on the east side of the building with the above living room and the east side of the living room is not exposed to direct sunlight, as a combination of directions, An example will be described in which the indoor units 2E, 2S, and 2W in the three directions of east, south, and west, which do not form a set only at opposite angles, are integrated into one outdoor unit 3.

まず、図2に示すように、東側、南側及び西側の各ペリメータゾーンの室外機3を別個に設けた場合、室外機3E,3S,3Wの能力の合計は、東0+南Max+西Max=10.0+24.5+20.1=54.6kWとなる。 First, as shown in FIG. 2, when the outdoor units 3 of the perimeter zones on the east side, the south side, and the west side are separately provided, the total capacity of the outdoor units 3E, 3S, and 3W is east 0 + south Max + west Max = 10. It becomes .0 + 24.5 + 20.1 = 54.6 kW.

これに対し、東側、南側及び西側の各ペリメータゾーンの室外機3を統合した場合の室外機3の能力の合計は、東0+南0+西Max=10.0+14.0+20.1=44.1kWと、東0+南Max+西0=10.0+24.5+10.0=44.5kWのうち、大きい値の44.5kWとなる。 On the other hand, the total capacity of the outdoor units 3 when the outdoor units 3 in the perimeter zones on the east side, the south side, and the west side are integrated is east 0 + south 0 + west Max = 10.0 + 14.0 + 20.1 = 44.1 kW. , East 0 + South Max + West 0 = 10.0 + 24.5 + 10.0 = 44.5 kW, which is the larger value of 44.5 kW.

すなわち、室内機2Eと室内機2Sと室内機2Wの室外機3を統合することによって、54.6−44.5=10.1kWの削減効果が期待でき、また、室外機3の能力を44.5/54.6≒0.82と小さくすることが可能となる。 That is, by integrating the indoor unit 2E, the indoor unit 2S, and the outdoor unit 3 of the indoor unit 2W, a reduction effect of 54.6-44.5 = 10.1 kW can be expected, and the capacity of the outdoor unit 3 is 44. It is possible to make it as small as .5 / 54.6≈0.82.

続いて、上記居室のある建物の西側に建物があって居室の西面に直達日射が当たらない場合で、方角の組合せは上記と同様に東、南、西の3方角の室内機2E,2S,2Wを1台の室外機3に統合する場合を例にして説明する。 Next, when there is a building on the west side of the building with the above living room and the west side of the living room is not exposed to direct sunlight, the combination of directions is the same as above, the indoor units 2E, 2S in the three directions of east, south, and west. , 2W will be described as an example of integrating into one outdoor unit 3.

まず、図2に示すように、東側、南側及び西側の各ペリメータゾーンの室外機3を別個に設けた場合、室外機3E,3S,3Wの能力の合計は、東Max+南Max+西0=17.3+24.5+10.0=51.8kWとなる。 First, as shown in FIG. 2, when the outdoor units 3 of the perimeter zones on the east side, the south side, and the west side are separately provided, the total capacity of the outdoor units 3E, 3S, and 3W is East Max + South Max + West 0 = 17 .3 + 24.5 + 10.0 = 51.8 kW.

これに対し、東側、南側及び西側の各ペリメータゾーンの室外機3を統合した場合の室外機3の能力の合計は、東Max+南0+西0=17.3+14.0+10.0=41.3kWと、東0+南Max+西0=10.0+24.5+10.0=44.5kWのうち、大きい値の44.5kWとなる。 On the other hand, the total capacity of the outdoor units 3 when the outdoor units 3 of the perimeter zones on the east side, the south side, and the west side are integrated is East Max + South 0 + West 0 = 17.3 + 14.0 + 10.0 = 41.3 kW. , East 0 + South Max + West 0 = 10.0 + 24.5 + 10.0 = 44.5 kW, which is the larger value of 44.5 kW.

すなわち、室内機2Eと室内機2Sと室内機2Wの室外機3を統合することによって、51.8−44.5=7.3kWの削減効果が期待でき、また、室外機3の能力を44.5/51.8≒0.86と小さくすることが可能となる。 That is, by integrating the indoor unit 2E, the indoor unit 2S, and the outdoor unit 3 of the indoor unit 2W, a reduction effect of 51.8-44.5 = 7.3 kW can be expected, and the capacity of the outdoor unit 3 is 44. It is possible to reduce the size to .5 / 51.8 ≈ 0.86.

本実施の形態では、東西南北の全方角から直達日射が当たる場合と東側から直達日射が当たらない場合を例にして説明した。つまり、直達日射が100%当たることによって最大冷房負荷がかかる場合(東Max等)及び直達日射が当たらないことによって所定の冷房負荷がかかる場合(東0等)、という直達日射の当たる程度として両極端の場合を例にして説明したが、実際に居室に直達日射の当たる程度に応じて重みを付けるなどして計算すればよい。 In the present embodiment, the case where the direct sunlight hits from all directions of north, south, east, and west and the case where the direct sunlight does not hit from the east side have been described as an example. In other words, when the maximum cooling load is applied when 100% of the direct sunlight hits (East Max, etc.) and when the predetermined cooling load is applied when the direct sunlight does not hit (East 0, etc.), the extremes are the extent to which the direct sunlight hits. Although the explanation was given using the case of (1) as an example, the calculation may be performed by weighting the living room according to the degree of direct sunlight.

本実施の形態においては、説明の便宜上、居室の窓は、東西南北を向いている場合で説明したが、各方角から若干外れている場合には、各方角からずれている比率(例えば、窓が東南東に向いているのであれば、南と東を0.25:0.75)を考慮して能力削減効果指標を算出すればよい。また、図7に提示した値は、冷房、窓にひさし無し、窓面積率が45%の場合の数値例である。従って、各建物の実際の状況を考慮して、数値を適宜補正して、能力削減効果指標を算出するのが好ましい。 In the present embodiment, for convenience of explanation, the window of the living room is described in the case of facing north, south, east, and west, but when it is slightly deviated from each direction, the ratio deviating from each direction (for example, the window). If is facing east-southeast, the capacity reduction effect index may be calculated in consideration of 0.25: 0.75) for south and east. Further, the values presented in FIG. 7 are numerical examples in the case of cooling, no eaves on the window, and the window area ratio of 45%. Therefore, it is preferable to calculate the capacity reduction effect index by appropriately correcting the numerical value in consideration of the actual situation of each building.

2 室内機、2E,2W,2S,2N 室内機の組、3E,3W,3S,3N,3IS,3IN,3EW,3SN 室外機、10 接続形態決定支援装置、11 接続形態決定部、12 効果算出部、13 表示制御部、14 負荷状況情報記憶部、21 CPU、22 ROM、23 RAM、24 ハードディスクドライブ(HDD)、25 マウス、26 キーボード、27 ディスプレイ、28 入出力コントローラ、29 ネットワークインタフェース(IF)、30 内部バス。 2 Indoor unit, 2E, 2W, 2S, 2N Indoor unit set, 3E, 3W, 3S, 3N, 3IS, 3IN, 3EW, 3SN Outdoor unit, 10 Connection form determination support device, 11 Connection form determination unit, 12 Effect calculation Unit, 13 Display control unit, 14 Load status information storage unit, 21 CPU, 22 ROM, 23 RAM, 24 Hard disk drive (HDD), 25 Mouse, 26 Keyboard, 27 Display, 28 I / O controller, 29 Network interface (IF) , 30 internal bus.

Claims (4)

空間内において同じ方角のペリメータゾーンに設置されている室内機をまとめて同じ室外機に接続する際に、前記空間の各方角からかかる日射による負荷に基づいて、1台の室外機に接続する方角の組を決定する決定手段を有することを特徴とするマルチ式空気調和システムにおける接続形態決定支援装置。 When connecting indoor units installed in the perimeter zone in the same direction in the space together to the same outdoor unit, the direction in which they are connected to one outdoor unit based on the load of sunlight applied from each direction of the space. A connection form determination support device in a multi-type air conditioning system, which comprises a determination means for determining a set of. 前記決定手段は、前記空間と前記空間の周囲にある建物との位置関係を参照して1台の室外機に接続する方角の組を決定することを特徴とする請求項1に記載のマルチ式空気調和システムにおける接続形態決定支援装置。 The multi-type according to claim 1, wherein the determination means determines a set of directions to be connected to one outdoor unit with reference to the positional relationship between the space and a building around the space. Connection form determination support device in an air conditioning system. 前記決定手段は、前記空間に対して各方角からの直達日射の当たる程度を参照して、1台の室外機に接続する方角の組を決定することを特徴とする請求項1に記載のマルチ式空気調和システムにおける接続形態決定支援装置。 The multi according to claim 1, wherein the determination means determines a set of directions to be connected to one outdoor unit by referring to the degree of direct solar radiation from each direction to the space. Connection form determination support device in the type air conditioning system. ペリメータゾーンに設置されている室内機を、方角毎に異なる室外機に接続した場合に対する前記決定手段により決定された組で室外機に接続した場合における室外機の能力削減効果指標を算出する算出手段を有することを特徴とする請求項1に記載のマルチ式空気調和システムにおける接続形態決定支援装置。 A calculation means for calculating the capacity reduction effect index of the outdoor unit when the indoor unit installed in the perimeter zone is connected to the outdoor unit in the set determined by the determination means for the case where the indoor unit is connected to a different outdoor unit for each direction. The connection form determination support device in the multi-type air conditioning system according to claim 1, wherein the device has.
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